NOVA"Asteroid: Doomsday Or Payday?"
From the width of a football field to the size of a small city, the space rocks called asteroids have the potential to be killers: in a collision with Earth, they could set off deadly blast waves, raging fires and colossal tidal waves. But some audacious entrepreneurs look up at asteroids and see payday, not doomsday.G

9:00 pm

Comet Encounter
They have fascinated, even terrified humans for thousands of years. Traditionally seen as harbingers of doom, comets can influence some people even to this day. For scientists, though, comets are a great opportunity for space exploration.G

10:00 pm

Inventions That Shook The World"The 1970s"
This decade is best remembered for disco and Watergate. But with inventions like the cell phone and the digital camera, the 1970s mark the beginning of the digital age to come. Other featured inventions in this episode include the bomb disposal robot, the sticky note, and the hybrid automobile. Part 8 of 10G